$OpenBSD: patch-src_filter_c,v 1.2 2010/10/26 12:21:35 merdely Exp $
--- src/filter.c.orig	Sat Apr  4 21:58:32 2009
+++ src/filter.c	Tue Oct 26 01:40:11 2010
@@ -51,7 +51,7 @@ $Id: patch-src_filter_c,v 1.2 2010/10/26 12:21:35 merdely Exp $
 #endif /* HAVE_SYS_WAIT_H */
 #endif /* HAVE_WORKING_FORK */
 
-
+#include <signal.h>
 
 
 
